14 results about "Digestion Treatment" patented technology

The invention discloses a method for synergistically preparing magnesium ammonium phosphate by treating ammonia-nitrogen wastewater with phosphate tailings, which comprises the following steps: roasting the phosphate tailings at high temperature to obtain roasted ore; the obtained roasted ore is subjected to digestion treatment, CO2 is introduced into ore pulp for carbonization, and the CO2 comes from roasting waste gas CO2 and carbon-containing flue gas; performing solid-liquid separation to obtain a first filtrate and a first filter residue, using the first filter residue to recover calcium, and using the first filtrate to treat ammonia-nitrogen wastewater; adding a phosphorus source and ammonia-nitrogen wastewater into the first filtrate, adjusting the pH value, and filtering after reaction to obtain a second filtrate and a second filter residue; the ammonia nitrogen content of the second filtrate is detected through Nessler's reagent spectrophotometry, and the ammonia nitrogen removal standard is met; and drying the second filter residue at low temperature to obtain a magnesium ammonium phosphate product. The method is low in production cost, high in product value and high in resource utilization rate, ammonia nitrogen in the wastewater can be efficiently removed, the environmental wastewater discharge standard is met, efficient value-added utilization of industrial by-products is achieved, and meanwhile the prepared magnesium ammonium phosphate product meets the industrial standard.

The utility model provides a heat digestion treatment device for element form valence state change, including casing, digestion pool, buffer pool, reaction pipeline, circulating pipeline, liquid circulating device and heating device, and is provided with oil containing cavity in digestion pool and buffer pool, and heating device is installed in oil containing cavity, and liquid circulating device is connected on any circulating pipeline for driving liquid circulation flow between digestion pool and buffer pool. Through setting up oil containing cavity to contain heat conducting oil, heat conducting oil is used as heat transfer medium to heat reaction pipeline, improves the temperature of heating, and has strong digestion capacity, on the other hand, sets up buffer pool and communicates buffer pool with digestion pool through circulating pipeline, and liquid circulating device drives heat conducting oil circulation flow between buffer pool and digestion pool, thereby makes heat conducting oil heating temperature rise more stable.

Provided is a method for preparing a recombinant human collagen. The method comprises: constructing a genetically engineered bacterium which expresses a prolyl hydroxylase and a recombinant human collagen; culturing the genetically engineered bacterium and performing digestion treatment by means of pepsin to obtain a recombinant human collagen type I or type III. The prolyl hydroxylase comprises P4Ha2, P4Hb and vP4H, and by means of controlling the ratio of the copy numbers of the genes thereof, the recombinant human collagen and a natural human collagen are consistent in hydroxylation modification. Also provided is a large-scale production method for the recombinant human collagen. The prepared recombinant human collagen has completely the same sequence composition and length and substantially the same hydroxyproline content as the natural human collagen, and also has a stable full-length triple helix structure and biological activity without immunogenicity and potential risk of viruses.

The application relates to a method for separating and primary culturing of monopterus albus liver cells. The method comprises the following steps: obtaining monopterus albus liver tissue, perfusing the liver tissue with HBSS buffer solution without calcium and magnesium until blood is completely drained; removing the capsule, blood clots and connective tissue after rinsing, and cutting the liver tissue; sequentially using 0.02% EDTA solution, 0.25% trypsin solution and 50 U / mL collagenase IV working solution to perform three-step digestion treatment on the liver tissue fragments; obtaining a cell suspension by blowing and filtering after the digestion is completed, and then performing gradient centrifugal purification of the cells at rotating speeds of 600 rpm, 250 rpm and 80 rpm in sequence; and finally resuspending the cells in DMEM / F12 culture medium containing 10% FBS and inoculating and culturing the cells. The monopterus albus primary liver cells obtained by the method have the advantages of large quantity, high activity and high purity, and provide a reliable in-vitro model for monopterus albus related research.

This application relates to the field of materials testing technology and provides a separation and detection method suitable for the separation and detection of metallic magnetic foreign matter in lithium iron phosphate. The method includes the following steps: obtaining a primary concentrate from lithium iron phosphate slurry using a magnetic rod; placing the primary concentrate in an aqueous solution containing a viscous dispersant, using a magnet to attract and move it, separating the strongly magnetic metallic foreign matter; performing microscopic observation on the weakly magnetic impurities discharged after separation to distinguish the strongly magnetic metallic foreign matter from iron phosphide; and performing digestion treatment on the strongly magnetic metallic foreign matter and performing elemental quantitative analysis. This application achieves efficient separation of strongly magnetic metallic foreign matter from iron phosphide through a three-stage treatment method of primary screening, viscous dispersant separation, and digestion treatment, thereby improving the accuracy of the detection results. Microscopic observation further verifies and ensures the separation effect of strongly magnetic metallic foreign matter from the weakly magnetic impurity iron phosphide, thus contributing to the accuracy of the detection results.

This invention discloses a method and apparatus for evaluating the digestibility of compressed dry food. The method includes: using an in vitro dynamic human gastrointestinal digestive system to simulate the digestion of compressed dry food and standard food, respectively, to obtain corresponding digestive juices; measuring the protein content sequence, amino acid content sequence, apparent viscosity value sequence, and protein digestibility sequence of the digestive juices corresponding to the compressed dry food and the standard food, respectively; and performing quantitative evaluation of the digestibility of the digestive juices corresponding to the compressed dry food and the standard food to obtain the digestibility evaluation value of the compressed dry food.

The application discloses a kind of compressed dry food energy supply stability evaluation method and device, the method comprises: using in vitro dynamic human gastrointestinal tract digestive system, compressed dry food and standard food are respectively simulated digestion processing, respectively corresponding digestive juice is obtained;The corresponding digestive juice of the compressed dry food and the corresponding digestive juice of standard food are measured to obtain corresponding protein content sequence, amino acid content sequence, carbohydrate content sequence, fat content sequence respectively;The protein content sequence, amino acid content sequence, carbohydrate content sequence, fat content sequence are carried out energy supply stability evaluation processing, and the energy supply stability evaluation value of compressed dry food is obtained.

The application provides a testing method of the content of alkali metal elements in a binder, comprising the following steps: 1) sequentially performing dry ashing treatment, pre-digestion treatment and microwave digestion treatment on the binder to obtain a digestion solution; the binder comprises alkali metal elements, and the alkali metal elements comprise sodium elements and / or lithium elements; the temperature of the microwave digestion treatment is higher than that of the pre-digestion treatment; 2) testing the peak intensity of the alkali metal elements in the digestion solution by using an inductively coupled plasma emission spectrometer; 3) drawing a standard curve based on an external standard method, and calculating the content of the alkali metal elements in the binder according to the peak intensity of the alkali metal elements in the digestion solution based on the standard curve. The testing method of the content of alkali metal elements in the binder provided by the application can improve the accuracy of the testing result, since the pretreatment process comprises dry ashing treatment, pre-digestion treatment and microwave digestion treatment in sequence.

This invention discloses a chicken embryo fibroblast, its preparation method, and its application, relating to the field of biopharmaceutical technology. The preparation method of the chicken embryo fibroblast includes the following steps: S1, providing chicken embryos and obtaining the muscle tissue of the chicken embryos; S2, mixing the muscle tissue with a plant-derived compound digestion solution, and sequentially performing digestion, purification, and primary culture treatment using a serum-free special culture medium to obtain primary chicken embryo fibroblasts; wherein, the plant-derived compound digestion solution includes bromelain and papain. This invention, using a plant-derived compound digestion solution and a serum-free special culture medium, significantly improves the batch-to-batch stability, cell yield, and cell purity of the cells, reducing the risk of exogenous viral contamination. Therefore, the prepared chicken embryo fibroblasts exhibit high batch-to-batch stability and good reproducibility in viral culture.

The application discloses a kind of rich in wheat oligopeptide compressed dry food digestion performance evaluation method and device, the method comprises: using in vitro dynamic human gastrointestinal digestion system, not containing wheat oligopeptide compressed dry food and rich in wheat oligopeptide compressed dry food are respectively simulated digestion processing, respectively measured to obtain first measurement index set and second measurement index set;Each type of measurement index set, including gastric emptying curve, protein digestion rate sequence, amino acid composition value sequence, fat bioavailability sequence;The gastric emptying curve includes several discrete points;The first measurement index set and second measurement index set are preprocessed, and obtain preprocessed index information set;The preprocessed index information set is evaluated and processed, and obtains the digestion performance evaluation value of rich in wheat oligopeptide compressed dry food.

The present application belongs to the technical field of safe digestion and cleaning of the surface metal lithium and metal oxide and diffusion pump oil attachment of lithium refining crucible, and particularly relates to an automatic digestion device for metal container attachment. A joint robot grabs the refining crucible into a digestion reaction tank, the digestion reaction tank is sealed and vacuumized, then is filled with argon for replacement, and the digestion is started by injecting digestion liquid; the joint robot grabs and transports the cleaned crucible to an ultrasonic cleaning device, adds cleaning liquid for ultrasonic cleaning, and then empties and drops dry the cleaning liquid after twice cleaning. The refining crucible is first subjected to digestion treatment, and then is subjected to once stainless steel cleaning liquid and twice ion-free water cleaning, and if unqualified, is returned to the cleaning stage until the refining crucible is qualified. The present application is suitable for clean cleaning of the refining crucible, so as to improve the refining quality of metal lithium.